I'd think it would be less expensive to make your own. You can pick up an old fashioned silver watering can from a place like Atwood's or Tractor Supply. Probably even Amazon. The fairy lights are available on Amazon, Walmart, Ross, and EBay. Just put the batteries in, loop the lights, twist-tie/zip-tie the end that goes into your watering can, and slide the free loops through the spout.

If that's not your cup of tea, search for watering can lights on Etsy.com.

Carol